Madewell Alpaca Blend Mock Neck Slim Fit Thin Sweater Long sleeve in Heather Violet. Size L Supersoft with a just-right fit? Yes and yes. This ribbed alpaca-blend mock-neck sweater is a winner with any and everything. Good amount of stretch. Great transitional piece for fall, winter & spring. Easily layer it over a dress for a sweater/ skirt look, with jeans, skirts, slacks, etc. The last pic is just for example of the fit. In perfect pre-owned condition, please see all the pictures for more information about the condition and style.